WO2013080573A1 - Procédé de production d'un échangeur de chaleur et procédé d'utilisation de ce dernier - Google Patents

Procédé de production d'un échangeur de chaleur et procédé d'utilisation de ce dernier Download PDF

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Publication number
WO2013080573A1
WO2013080573A1 PCT/JP2012/050076 JP2012050076W WO2013080573A1 WO 2013080573 A1 WO2013080573 A1 WO 2013080573A1 JP 2012050076 W JP2012050076 W JP 2012050076W WO 2013080573 A1 WO2013080573 A1 WO 2013080573A1
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Prior art keywords
plate
heat exchanger
welding
plates
plate members
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PCT/JP2012/050076
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English (en)
Japanese (ja)
Inventor
勝利 松永
久美 松矢
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三浦工業株式会社
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Publication of WO2013080573A1 publication Critical patent/WO2013080573A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
    • F28F3/14—Elements constructed in the shape of a hollow panel, e.g. with channels by separating portions of a pair of joined sheets to form channels, e.g. by inflation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks
    • F28D2020/0078—Heat exchanger arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/12—Safety or protection arrangements; Arrangements for preventing malfunction for preventing overpressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/14—Safety or protection arrangements; Arrangements for preventing malfunction for preventing damage by freezing, e.g. for accommodating volume expansion

Definitions

  • the present invention relates to a heat exchanger in which a plate material is overlapped and welded, and then a fluid is press-fitted into a predetermined region to bulge and deform to form a flow path, and more particularly to a method of manufacturing and using such a heat exchanger. It is.
  • This application claims priority based on Japanese Patent Application No. 2011-262606 for which it applied to Japan on November 30, 2011, and uses the content here.
  • Patent Document 1 the openings of the hollow containers (2, 3) face each other, and a seal member (6) is interposed between the flanges (2a, 3a) of both containers (2, 3). It is disclosed that the two flanges (2a, 3a) are welded while the flanges (2a, 3a) are brought close to each other by evacuating from the space (A) between (2, 3).
  • the outermost peripheral end surface (13) is welded to the outermost peripheral end surface (13) of the overlapped metal plates (12, 12) while leaving a plurality of openings (14), and the non-expanding is performed. It is disclosed that after welding the protruding portion (15), a fluid is press-fitted from the opening (14) to bulge and form a portion other than the non-bulged portion (15).
  • the seal member (6) is required between the flanges (2a, 3a) of the container (2, 3), and even if the seal member (6) is disposed, the seal is broken during decompression. And air may flow into the space (A) from the outside.
  • a recess for the space (A) is formed in the container (2, 3) in advance, and it is not intended to further exclude air from the gap between the stacked plate members. .
  • the outermost peripheral end surface (13) is welded leaving the opening (14) on the outermost peripheral end surface (13) of the metal plate (12).
  • the metal plates (12) are overlapped as in the invention described in Patent Document 2.
  • the metal plates (12) are further excluded while removing air from the gaps between the metal plates (12) and between the metal plates (12) made of flat plates without any recesses. ) The idea of welding each other cannot happen.
  • the problem to be solved by the present invention is to easily and surely weld plate materials together in a heat exchanger that forms a bulged portion after welding by overlapping plate materials. It is another object of the present invention to easily perform evacuation from between plate members and press-fitting fluid into the bulging portion. It is another object of the present invention to provide a heat exchanger that can prevent leakage to the outside and can detect leakage even if the welding of the bulging portion is broken during use of the heat exchanger.
  • the present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is a peripheral welding step in which a plurality of plate materials are overlapped to weld the entire circumference at the outer peripheral end surface, and the plate surface of the plate material.
  • the pressure reducing step for sucking and discharging the air remaining in the gap between the plate materials to the outside from the mouth provided in advance, and welding the plate materials on the plate surface of the plate material while holding the pressure gap between the plate materials under reduced pressure
  • an internal welding step for dividing the bulging portion into a non-bulging portion and a bulging step for bulging and deforming the fluid by press-fitting a fluid into the bulging portion are sequentially manufactured. Is the method.
  • the bulge is formed by welding to the plate surface in a state where the gap between the plate materials is reduced. Since the gap between the plate materials is closed in advance around the entire outer peripheral end surface, the gap between the plate materials can be reliably decompressed and welded, and the reliability of welding between the plate materials is increased. Moreover, since the evacuation from between the plate materials and the press-fitting of the fluid into the bulging portion are performed from the mouth provided on the plate surface, they can be easily performed.
  • the invention according to claim 2 uses two plate materials, and forms in advance two or more of the mouth portions in advance on the plate surface of one or both of the plate materials, and each mouth portion is made of the plate material. After forming a hole in the plate surface, the end of the cylindrical nozzle is fixed to the hole, and the plate materials are overlapped so that the nozzle protrudes from the surface opposite to the overlapping surface
  • the peripheral welding step is performed, and in the internal welding step, the bulging portion is formed by meandering, and the plate members are welded together so that the nozzles are disposed at both ends of the bulging portion, and the bulging portion is formed.
  • the bulging portion formed by a region surrounded by welding applied to the plate surface of the plate material is bulged and deformed in an outfeeding step, inside the outer peripheral portion of the plate material. It is a manufacturing method of this heat exchanger.
  • the cylindrical nozzle is provided so as to protrude from the plate surface, evacuation from between the plate materials, press-fitting of fluid into the bulging portion, or the bulging portion during use is performed.
  • the fluid can be easily taken in and out using a nozzle.
  • the bulging part is arranged meandering and the nozzles are arranged at both ends thereof, the heat exchange performance is also good.
  • the bulging part is formed from the area surrounded by the welding applied to the plate surface of the plate material on the inner side of the outer peripheral part of the plate material, the welding of the bulging part is damaged when the heat exchanger is used. However, leakage of fluid to the outside can be prevented by welding the outermost periphery.
  • the invention according to claim 3 provides a first nozzle and a second nozzle as the nozzles at both ends of the bulging portion, while providing a third nozzle at the non-bulging portion, A vacuum pump is connected to at least one of the nozzles, and a pressure gauge is provided to at least one of the remaining nozzles. If there are remaining nozzles, the opening is closed. After depressurizing the gap between the plate members by operating the vacuum pump, the vacuum pump is stopped and the pressure change of the pressure gauge is performed to check the vacuum leakage from between the plate members and the welding failure. It is a manufacturing method of the heat exchanger of Claim 2.
  • a welding failure is confirmed by checking whether or not there is a fluid leak from the bulging portion while maintaining a pressurized state of the gap between the plate members.
  • the invention according to claim 5 is characterized in that in the internal welding step, welding is performed with a width smaller than the plate thickness of the plate material. It is a manufacturing method.
  • the fifth aspect of the present invention even if the weld of the bulging portion is broken, it can be broken in the direction in which the plate members are separated from each other. Therefore, even if the welding of the bulging portion is broken, the leakage of the fluid in the bulging portion to the outside can be reliably prevented by the welding of the outermost peripheral portion.
  • the invention according to claim 6 is characterized in that one or both of the two plate materials are subjected to a treatment for increasing the surface roughness on at least the plate surface on the side to be the overlapping surface.
  • the sixth aspect of the present invention it is possible to easily perform evacuation from the gap between the plate materials by performing a process for increasing the surface roughness on the overlapping surface of at least one plate material.
  • the invention according to claim 7 is the method of manufacturing a heat exchanger according to claim 6, wherein the treatment for increasing the surface roughness is hairline finishing.
  • the seventh aspect of the present invention it is possible to easily perform evacuation from the gap between the plate materials by using the plate material subjected to the hairline finish.
  • the invention according to claim 8 is a method of using the heat exchanger manufactured by the manufacturing method according to any one of claims 1 to 7, wherein the non-expanding is performed during use of the heat exchanger.
  • This is a method of using a heat exchanger characterized by monitoring the pressure in the gap between the plate members in the section and detecting the destruction of the internal weld by the pressure increase.
  • the invention according to claim 9 is a method of using the heat exchanger manufactured by the manufacturing method according to any one of claims 1 to 7, wherein the heat exchanger is placed in a water storage tank.
  • a method of using a heat exchanger comprising: submerging and freezing a part of water in the water storage tank through a refrigerant through the bulging portion; and using cold water in the water storage tank. is there.
  • the plate materials can be easily and reliably welded in the heat exchanger that forms the bulged portion after the plate materials are overlapped and welded.
  • it is possible to easily perform evacuation from between the plate members and press-fitting the fluid into the bulging portion.
  • leakage to the outside can be prevented and leakage can be easily detected.
  • FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. It is a figure which shows the continuation of FIG. 3, and has shown the pressure reduction process. It is a figure which shows the continuation of FIG. 5, and has shown the internal welding process. It is a figure which shows the continuation of FIG. 6, and has shown the swelling process. It is a figure which shows a part of cross section of the heat exchanger after implementing the swelling process of FIG.
  • FIG. 7 It is a figure which shows the continuation of FIG. 7, and has shown the leak confirmation process by submergence. It is a figure which shows an example of the usage method of the heat exchanger of FIG. 1, and has shown the example utilized as a heat exchanger of an ice thermal storage tank.
  • FIG. 1 is a schematic view showing an embodiment of the heat exchanger 1 of the present invention.
  • the heat exchanger 1 of the present embodiment is divided into the bulging portion 4 and the non-bulging portion 5 by overlapping the two plate members 2 and 3 and performing appropriate welding, and then the bulging portion 4.
  • the fluid is press-fitted and the bulging portion 4 is bulged and deformed.
  • a gap is formed between the plate members 2 and 3, and a fluid flow path is formed.
  • the bulging portion 4 is formed by applying an annular weld 6 in an appropriate shape on the plate surface. That is, the inner region surrounded by the annular weld 6 becomes the bulging portion 4. However, a part of the region in the bulging portion 4 may be further divided into appropriate regions by welding 6 ′. Moreover, you may form the some bulging part 4 in a plate surface.
  • the heat exchanger 1 When the heat exchanger 1 is used, a fluid for heat exchange is passed through the bulging portion 4, and the mouth portions 7 and 8 are formed in the bulging portion 4.
  • the formation positions of the mouth portions 7 and 8 are not particularly limited, but are formed at both end portions of the bulging portion 4 in this embodiment.
  • the shape of the bulging portion 4 is not particularly limited, but in this embodiment, the bulging portion 4 is formed to meander from side to side from the top to the bottom of the plate surface in FIG. More specifically, in FIG. 1, the linear portions along the left-right direction are arranged at equal intervals in the vertical direction, and the linear portions adjacent to each other in the vertical direction are alternately connected by a semicircular shape portion on the left and right sides. Is formed. Then, fluid is taken in and out of the bulging portion 4 when the heat exchanger 1 is used at both ends in the longitudinal direction (upper right and lower right in FIG. 1) of the bulging portion 4 formed in such a meandering manner. Mouth portions 7 and 8 are provided.
  • the bulging portion 4 may be divided into a plurality (three in the illustrated example) in the width direction as appropriate by welding 6 ′ except for both ends in the longitudinal direction. Note that the end 6 ′′ of the weld 6 ′ for this purpose is folded back in a loop shape to ensure the welding strength.
  • FIG. 2 to FIG. 9 are schematic diagrams sequentially illustrating a method for manufacturing the heat exchanger 1 of the present embodiment.
  • two plate materials for example, a thin flat plate having a thickness of about 1 to 1.5 mm
  • Each of the plate members 2 and 3 is square in this embodiment, but may be rectangular or other shapes.
  • the plates 2 and 3 are not particularly limited in material, but are made of stainless steel in this embodiment.
  • Each of the plate members 2 and 3 may be composed of a plate member having a smooth front surface and back surface. However, as will be described later, one or both of the two plate members 2 and 3 become at least a superposed surface. You may give the process which increases surface roughness to the board surface of the side. As a process for increasing the surface roughness, there is a hairline finish in which long and narrow polishing eyes such as hair are formed along a predetermined direction.
  • the plate members 2 and 3 of the present embodiment have the same configuration, and the same hairline finish is applied to the front and back surfaces.
  • each of the plate members 2 and 3 is provided with the mouth portions 7 and 8 at appropriate positions.
  • the mouth portions 7 and 8 are configured by forming holes 9 and 10 in the lower plate 2 and providing cylindrical nozzles 11 and 12 in the holes 9 and 10. That is, as shown in FIG. 4, the end portion of the nozzle 11 (12) is fitted into the hole 9 (10) and the both are welded (for example, TIG welding) 13. At this time, it is preferable that the nozzle 11 (12) and the welded portion 13 do not protrude to the side of the overlapping surface of the plate members 2 and 3.
  • the first nozzle 11 and the second nozzle 12 are provided in the front and rear corners on the right side of the lower plate 2 as the mouth portions 7 and 8 provided in the bulging portion 4 in FIG.
  • the non-bulged portion 5 is also provided with a mouth portion 14.
  • a third nozzle 16 is provided in a hole 15 provided in one of the front and rear corners on the left side of the upper plate 3 in FIG.
  • the position of the third nozzle 16 may be the center in the front-rear direction, but in the present embodiment, the third nozzle 16 is disposed at a position close to the front-rear direction in relation to the welding position in the internal welding process described later.
  • the two plates 2 and 3 are overlapped, and the entire circumference is welded 17 (for example, laser welding) at the outer peripheral end face (peripheral welding process).
  • the nozzles 11, 12, and 16 are arranged so as to protrude from the surface opposite to the overlap surface.
  • the two plates 2 and 3 are overlapped so that the directions of the hairlines of the plates 2 and 3 intersect each other.
  • a vacuum pump 18 is connected to the first nozzle 11 and the second nozzle 12.
  • a pressure gauge 19 and a valve 20 are provided on the piping between the nozzles 11 and 12 and the vacuum pump 18.
  • the third nozzle 16 is provided with a pressure gauge 21.
  • each of the first nozzle 11 and the second nozzle 12 is provided with a vacuum pump 18, but the piping from each nozzle 11, 12 is joined and connected to a common vacuum pump 18. May be.
  • the vacuum pumps 18 are individually provided for the first nozzle 11 and the second nozzle 12, but the installation of either one of the vacuum pumps 18 is omitted, and the vacuum pump 18 is not installed.
  • the nozzle on the side may be closed (that is, the valve 20 is closed).
  • the vacuum pump 18 connected to the first nozzle 11 and / or the second nozzle 12 is operated to suck and discharge the air remaining in the gap between the plate members 2 and 3 to the outside.
  • the pressure gap is reduced (pressure reduction step). Since the outer peripheral end surface between the plate members 2 and 3 is closed in advance by the peripheral welding process in advance, evacuation from the gap between the plate members 2 and 3 can be reliably achieved by the decompression step.
  • the vacuum pump 18 After evacuating to the set time or set pressure, the vacuum pump 18 is stopped and the valves 20 are closed. It can hold
  • the plate members 2 and 3 are welded to each other on the plate surfaces of the plate members 2 and 3 as shown in FIG. 6 (6, 6 ′) (for example, laser welding). And it divides into the bulging part 4 and the non-bulging part 5 (internal welding process). During this welding, the gap between the plate members 2 and 3 is maintained under reduced pressure. For this reason, the plate member is also closed by the vacuum pump 18 in the internal welding step in addition to closing the nozzles 11, 12 and 16 after the pressure reduction step. The evacuation from the gap between two or three may be continued.
  • the plate members 2 and 3 can be welded in a state where the plate members 2 and 3 are in close contact with each other, and easy and reliable welding is performed. be able to. Even if the two plates are about to separate due to thermal distortion caused by welding, the reduced pressure state between the plate members 2 and 3 prevents this, and highly reliable welding can be performed.
  • the method for confirming the fluid leakage is not particularly limited.
  • the heat exchanger 1 is submerged in a state where all the nozzles 11, 12, 16 are closed, and bubbles from the heat exchanger 1 are The presence or absence of spillage can be confirmed visually.
  • one or both of the two plate members 2 and 3 are at least on the side that becomes the overlapping surface.
  • the plate surface is preferably subjected to a treatment for increasing the surface roughness. Therefore, in this embodiment, as described above, a plate material having a hairline finish (for example, a finish of No. 50 to No. 200, preferably No. 80 to No. 150) is used, and the directions of the hairline lines cross each other. It arrange
  • a hairline finish for example, a finish of No. 50 to No. 200, preferably No. 80 to No. 150
  • the treatment such as hairline finishing may be omitted for one plate or may be omitted for the surface opposite to the overlapping surface. May be aligned or crossed in a direction other than a right angle. Furthermore, you may increase the surface roughness of the overlapping surface of the board
  • the heat exchanger 1 of the present embodiment is used by passing a fluid through the bulging portion 4 using the nozzles 11 and 12 provided in the bulging portion 4. For example, the fluid is introduced from the first nozzle 11 and the fluid is led out from the second nozzle 12 to the bulging portion 4 of the heat exchanger 1. Thereby, heat exchange between the fluid passing through the bulging portion 4 and the surrounding fluid outside the heat exchanger 1 can be achieved.
  • the nozzle 16 of the non-bulging part 5 is obstruct
  • the application of the heat exchanger 1 is not particularly limited. For example, as shown in FIG. 10, the heat exchanger 1 can be used as a heat exchanger for an ice heat storage tank.
  • the heat exchanger 1 is submerged in the water tank 23, and the refrigerant from the refrigeration apparatus (condensing unit) 24 is passed through the expansion portion 4 via an expansion valve (not shown).
  • the water in the water storage tank 23 can be used in the cold water use facility 25.
  • four heat exchangers 1 are installed in parallel, but it goes without saying that the number and arrangement of the heat exchangers 1 can be changed as appropriate.
  • the refrigeration apparatus 24 is operated using nighttime electricity with a low electricity bill, and a low-temperature refrigerant is passed through the heat exchanger 1 to cool or partially cool the water in the water tank 23. Freeze.
  • the cold water in the water storage tank 23 is used in the cold water use facility 25.
  • the cold water use facility 25 is not particularly limited, but is, for example, an air conditioning facility or a food machine. That is, the cold water in the water storage tank 23 can be used for cooling or food cooling.
  • the destruction of the internal welding (welding in the internal welding process) 6 is detected by the pressure increase.
  • a pressure gauge is provided in the third nozzle 16, and the breakdown of internal welding can be detected by the pressure increase.
  • the internal welding process if welding is performed with a width Y (Y ⁇ X) smaller than the plate thickness X of the plate members 2 and 3, if the internal weld breaks, the plate members 2 and 3 are damaged in the direction of separating them. It can be easily detected and can be detected by the pressure gauge of the third nozzle 16.
  • the weld 17 is applied to the outermost peripheral portion of the heat exchanger 1, it can be detected before the fluid leaks to the outside of the heat exchanger 1.
  • the manufacturing method and the usage method of the heat exchanger 1 of the present invention are not limited to the configuration of the above embodiment, and can be changed as appropriate.
  • TIG welding is used for installing the nozzles 11, 12, 16 on the plate members 2, 3, and laser welding is used for the peripheral welding process and the internal welding process, but the type of welding can be changed as appropriate.
  • laser welding is suitable for internal welding processes because it can be welded deeply with a narrow width.
  • the peripheral welding process, the internal welding process, the bulging process, etc. can be set and operated on a jig suitable for each.
  • a jig for sandwiching the stacked plate members 2 and 3 from above and below may be used in the peripheral welding process, and it is preferable to sandwich the plate members 2 and 3 from above and below so that the plate members 2 and 3 are not distorted by heat.
  • the bulging process it is preferable to use a cover-shaped jig for adjusting the deformation of the bulging portion 4 to a predetermined level.
  • the mouth portions 7, 8, and 14 are configured by providing the nozzles 11, 12, and 16 made of the cylindrical material in the holes 9, 10, and 15 formed in the plate materials 2 and 3, but the mouth portions 7 and 8 14 and nozzles 11, 12, and 16 can be changed as appropriate.
  • a cylindrical nozzle a block-like member having a through hole may be used in addition to a simple pipe.
  • the number and formation positions of the mouth portions 7, 8, and 14 can be changed as appropriate. What is necessary is just to form two or more opening parts (nozzles) in the total of the two board
  • FIG. 1 the vacuum pump 18 is connected to at least one of the nozzles, and a pressure gauge is provided to at least one of the remaining nozzles. With the closed, the vacuum pump 18 is operated to depressurize the gap between the plate members. Thereafter, it is possible to check for a vacuum leak from the plate members 2 and 3 and thus a welding failure by changing the pressure of the pressure gauge while the vacuum pump 18 is stopped.
  • each nozzle may be closed and welded to the plate surface while maintaining the reduced pressure state of the gap between the plate members 2 and 3, or may be welded to the plate surface while operating the vacuum pump 18.
  • fluid may be pressed into the bulging portion from at least one of the nozzles provided in the bulging portion 4.
  • the installation of the nozzle 16 of the non-bulged portion 5 can be omitted depending on circumstances.
  • nitrogen gas was used at the swelling process, you may use the pressurized gas thru
  • the peripheral welding process may be performed so that the gap between the plate surface of one plate member and the end surface of the other plate member is closed by welding in a state where the end surface of the other plate member is disposed inside the end surface. Further, the plate thicknesses of the plate members 2 and 3 may be different from each other.
  • the two plate members 2 and 3 are used. However, in some cases, three or more plate members may be used. In this case as well, the gap at the outer peripheral portion between the plate members may be closed by welding, and then the plate surface may be welded to form the bulge portion, and the bulge portion between the plate members may be formed to bulge.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Laser Beam Processing (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

La présente invention rend possible de souder ensemble de manière aisée et fiable des plaques lors de la production d'un échangeur de chaleur, les plaques étant placées les unes sur les autres et soudées ensembles et, par la suite, un fluide étant injecté dans une région prédéterminée qui est gonflée et déformée afin de former un trajet d'écoulement. La présente invention rend également possible de créer facilement un vide entre les plaques et d'injecter un fluide dans une partie gonflée. Au cours d'une étape de soudage périphérique, une pluralité de plaques (2), (3) sont superposées et toute la périphérie est soudée (17) au niveau d'une face d'extrémité périphérique. Au cours d'une étape ultérieure de réduction de la pression, l'air qui reste dans un espace situé entre les plaques, est aspiré et évacué par les ouvertures (11), (12) réalisées auparavant sur les surfaces des plaques. Au cours d'une étape ultérieure de soudage intérieur, les plaques sont soudées ensemble (6) au niveau des surfaces des plaques dans un état dans lequel l'espace situé entre les plaques est laissé sous pression réduite et les plaques sont divisées en une partie gonflée (4) et une partie non gonflée (5). Au cours d'une étape ultérieure de gonflement, un fluide est injecté dans la partie gonflée (4) qui est ensuite gonflée et déformée. Au cours d'une étape de soudage intérieur, le fait de garder l'espace situé entre les plaques sous pression réduite permet un soudage fiable entre les plaques. Parce que les ouvertures sont réalisées sur les surfaces des plaques, l'étape de réduction de la pression et l'étape de gonflement sont effectuées facilement.
PCT/JP2012/050076 2011-11-30 2012-01-05 Procédé de production d'un échangeur de chaleur et procédé d'utilisation de ce dernier WO2013080573A1 (fr)

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JP2011262606A JP5896116B2 (ja) 2011-11-30 2011-11-30 熱交換器の製造方法および使用方法
JP2011-262606 2011-11-30

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US10309732B2 (en) 2015-12-11 2019-06-04 Hanon Systems Internal degas feature for plate-fin heat exchangers

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